Chain wheel device

Abstract

The utility model discloses a chain wheel device which comprises a wheel shaft, a tooth body and a bolt. A plurality of tooth bodies are arranged on the wheel shaft at intervals in the circumferential direction, and each tooth body is connected with the wheel shaft through a plurality of bolts. Axle grooves are formed in the positions, corresponding to the tooth bodies, of the axle, and the bottoms of the tooth bodies are arranged in the axle grooves in a matched mode. The longitudinal positioning convex ribs are arranged in the grooves of the wheel shaft, so that the effects of reinforcing the structure and positioning are achieved; a transverse positioning groove is formed in the longitudinal positioning convex rib and is used for assisting in positioning a tooth body; a longitudinal positioning groove is formed in the bottom surface of the tooth body and is used for being matched with the longitudinal positioning convex rib to realize longitudinal positioning; and the transverse positioning convex ribs are arranged in the longitudinal positioning grooves, so that the structural strength is improved, the transverse positioning convex ribs can be matched with the transverse positioning grooves to realize transverse positioning, the operation bearing capacity and the impact resistance of the wheel shaft are greatly improved, and the service life of the chain wheel device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of scraper sprockets, in particular to a sprocket device. Background Art

[0002] The scraper sprocket is used to drive the chain to operate, and includes a wheel axle and multiple teeth. The teeth are connected to the wheel axle through bolts. A wheel axle groove is opened on the wheel axle, and the bottom surface of the teeth is assembled in the wheel axle groove and then locked by bolts.

[0003] In the prior art, there is no reinforcement structure in the axle groove, and the tooth body and the axle groove are completely limited by the groove wall of the axle groove, which weakens the operating load-bearing capacity and impact resistance of the axle and shortens the service life of the axle. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a sprocket device, in which a longitudinal positioning rib is provided in the groove of the wheel shaft, which plays a role in strengthening the structure and positioning; a transverse positioning groove is provided on the longitudinal positioning rib to assist in positioning the tooth body; a longitudinal positioning groove is provided on the bottom surface of the tooth body to cooperate with the longitudinal positioning rib to achieve longitudinal positioning; a transverse positioning rib is provided in the longitudinal positioning groove, which not only improves the structural strength, but also can cooperate with the transverse positioning groove to achieve positioning, thereby greatly improving the operating load-bearing capacity and impact resistance of the wheel shaft and extending the service life of the wheel shaft.

[0005] The technical solution of the utility model provides a sprocket device, including a wheel shaft, a tooth body and a bolt;

[0006] A plurality of tooth bodies are arranged on the axle at intervals along the circumferential direction, and each tooth body is connected to the axle via a plurality of bolts;

[0007] A wheel axle groove is provided on the wheel axle at a position corresponding to each tooth body, a longitudinal positioning rib extending along the axial direction of the wheel axle is provided in the wheel axle groove, and a transverse positioning groove is provided on the positioning rib;

[0008] The bottom surface of the tooth body is provided with a longitudinal positioning groove extending along the axial direction of the wheel shaft, and a transverse positioning convex rib is provided in the longitudinal positioning groove;

[0009] The bottom of the tooth body is matched in the wheel shaft groove, the longitudinal positioning rib is matched in the longitudinal positioning groove, and the transverse positioning rib is matched in the transverse positioning groove.

[0010] In one of the optional technical solutions, each of the longitudinal positioning ribs is provided with a plurality of internal threaded holes at intervals, and one end of the bolt is connected to the internal threaded hole.

[0011] In one of the optional technical solutions, the longitudinal positioning rib is integrally formed with the groove wall of the wheel axle groove.

[0012] In one of the optional technical solutions, the transverse positioning rib is integrally formed with the groove wall of the longitudinal positioning groove.

[0013] In one of the optional technical solutions, the tooth body includes two tooth body monomers that are separately arranged and adjacent to each other;

[0014] Each tooth body monomer is connected to the wheel axle via two bolts;

[0015] The bottom surface of each tooth element monomer is provided with a longitudinal positioning groove and a transverse positioning rib, and the transverse positioning rib is located between the two bolts.

[0016] In one of the optional technical solutions, the tooth body monomer includes two teeth arranged at intervals, and each of the teeth is connected to the wheel axle via a bolt.

[0017] In one of the optional technical solutions, the bolt includes a bolt head and a screw connected to the bolt head;

[0018] The tooth body is provided with a head assembly groove and a screw rod through hole;

[0019] The bolt head is assembled in the head assembly groove, and the screw rod passes through the screw rod through hole and is connected to the wheel axle;

[0020] A first sealing ring is arranged between the bolt head and the groove wall of the head assembly groove.

[0021] In one of the optional technical solutions, the bolt head is provided with a wrench insertion slot, and a plug cover is detachably installed in the wrench insertion slot.

[0022] In one of the optional technical solutions, a washer is provided between the bolt head and the bottom plate of the head assembly groove.

[0023] In one of the optional technical solutions, a second sealing ring is provided between the tooth body and the groove wall of the wheel shaft groove.

[0024] The above technical solution has the following beneficial effects:

[0025] The sprocket device provided by the utility model includes a wheel axle, a tooth body and a bolt; a plurality of tooth bodies are arranged at intervals along the circumferential direction on the wheel axle, and each tooth body is connected to the wheel axle through a plurality of bolts; a wheel axle groove is provided on the wheel axle corresponding to the position of each tooth body, and the bottom of the tooth body fits in the wheel axle groove. A longitudinal positioning rib is provided in the wheel axle groove, which plays a role in strengthening the structure and positioning; a transverse positioning groove is provided on the longitudinal positioning rib to assist in positioning the tooth body; a longitudinal positioning groove is provided on the bottom surface of the tooth body, which is used to cooperate with the longitudinal positioning rib to achieve longitudinal positioning; a transverse positioning rib is provided in the longitudinal positioning groove, which not only improves the structural strength, but also can cooperate with the transverse positioning groove to achieve transverse positioning, greatly improving the operating load-bearing capacity and impact resistance of the wheel axle, and extending the service life of the sprocket device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The disclosure of the present invention will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0027] Figure 1 A three-dimensional diagram of a sprocket device provided in one embodiment of the utility model;

[0028] Figure 2 An exploded view of a sprocket device provided in one embodiment of the utility model;

[0029] Figure 3 A cross-sectional view of a sprocket device provided in one embodiment of the utility model along a radial direction;

[0030] Figure 4 for Figure 3 A magnified view of part A;

[0031] Figure 5 A cross-sectional view of a sprocket device provided by an embodiment of the utility model along the axial direction;

[0032] Figure 6 is a three-dimensional diagram of the wheel axle;

[0033] Figure 7 It is an enlarged view of part B in the figure;

[0034] Figure 8 for Figure 7 A cross-sectional view of the groove portion of the axle shown along the radial direction;

[0035] Fig. 9 It is a three-dimensional image of a tooth composed of two tooth monomers;

[0036] Fig.10 for Fig. 9 A stereoscopic image of the tooth from another viewing angle;

[0037] Fig.11 It is a three-dimensional image of a tooth monomer;

[0038] Fig.12 for Fig.11 A stereoscopic view of the tooth monomer shown in another perspective;

[0039] Fig.13 It is a cross-sectional view of the tooth body monomer along the screw hole;

[0040] Fig.14 Exploded view of the plug cover, bolts, first sealing ring and gasket. DETAILED DESCRIPTION

[0041] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings. The same parts are represented by the same figure numbers. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0042] like Figure 1-10 As shown, a sprocket device provided by an embodiment of the utility model includes a wheel shaft 1, a tooth body 2 and a bolt 3.

[0043] A plurality of tooth bodies 2 are arranged at intervals along the circumferential direction on the axle 1 , and each tooth body 2 is connected to the axle 1 via a plurality of bolts 3 .

[0044] A wheel axle groove 11 is provided on the wheel axle 1 at a position corresponding to each tooth body 2 , a longitudinal positioning rib 12 extending along the axial direction of the wheel axle 1 is provided in the wheel axle groove 11 , and a transverse positioning groove 13 is provided on the positioning rib.

[0045] The bottom surface of the tooth body 2 is provided with a longitudinal positioning groove 22 extending along the axial direction of the wheel axle 1 , and a transverse positioning rib 23 is provided in the longitudinal positioning groove 22 .

[0046] The bottom of the tooth body 2 is fitted in the wheel shaft groove 11 , the longitudinal positioning rib 12 is fitted in the longitudinal positioning groove 22 , and the transverse positioning rib 23 is fitted in the transverse positioning groove 13 .

[0047] The sprocket device provided by the utility model comprises a wheel axle 1, a plurality of tooth bodies 2 and a plurality of bolts 3. Wheel axle grooves 11 are provided at intervals along the circumferential direction on the wheel axle 1, a tooth body 2 is installed in each wheel axle groove 11, and the bottom of the tooth body 2 is installed in the wheel axle groove 11. The plurality of tooth bodies 2 are arranged in a ring shape on the wheel axle 1 to form sprocket teeth. A plurality of internal threaded holes 14 are provided at the bottom of the wheel axle groove 11. Each tooth body 2 is provided with a plurality of through holes for the bolts 3 to pass through and be connected in the internal threaded holes 14.

[0048] The longitudinal direction involved in the present invention refers to the axial direction along the wheel axle 1 , and the transverse direction involved in the present invention refers to the direction perpendicular to the axial direction of the wheel axle 1 .

[0049] In order to improve the structural strength and positioning function, a longitudinal positioning rib 12 is provided in the axle groove 11. The longitudinal positioning rib 12 extends along the axial direction of the axle 1 to strengthen the structure and positioning. A plurality of transverse positioning grooves 13 are provided on the longitudinal positioning rib 12. The transverse positioning grooves 13 are substantially perpendicular to the longitudinal positioning rib 12 and are used to assist in positioning and installing the tooth body 2.

[0050] A longitudinal positioning groove 22 is provided on the bottom surface of the tooth body 2. The longitudinal positioning groove 22 extends along the axial direction of the wheel shaft 1 and is used to cooperate with the longitudinal positioning rib 12 to achieve longitudinal positioning. A transverse positioning rib 23 is provided in the longitudinal positioning groove 22. The transverse positioning rib 23 is substantially perpendicular to the longitudinal positioning groove 22, and its two ends are connected to the groove walls on both sides of the longitudinal positioning groove 22, which not only improves the structural strength, but also can cooperate with the transverse positioning groove 13 to achieve transverse positioning.

[0051] The longitudinal positioning rib 12 and the transverse positioning groove 13 roughly form an "H"-shaped convex structure, and the longitudinal positioning groove 22 and the transverse positioning rib 23 roughly form an "H"-shaped groove structure. The "H"-shaped convex structure cooperates with the "H"-shaped groove structure to evenly transmit the force to each section of the main shaft 1, greatly improving the operating load-bearing capacity and impact resistance of the wheel shaft 1, and extending the service life of the sprocket device.

[0052] In one embodiment, if Figure 5-8 As shown, each longitudinal positioning rib 12 is provided with a plurality of internal thread holes 14 at intervals, and one end of the bolt 3 is connected to the internal thread hole 14 .

[0053] The internal threaded hole 14 extends from the longitudinal positioning rib 12 to the inside of the wheel axle 1 , which prolongs the length of the internal threaded hole 14 and helps to improve the connection stability between the bolt 3 and the wheel axle 1 .

[0054] In one embodiment, the longitudinal positioning rib 12 is integrally formed with the groove wall of the wheel axle groove 11, and can be specifically integrally cast, which is convenient for processing and molding and also improves the structural strength.

[0055] In one embodiment, the transverse positioning rib 23 and the groove wall of the longitudinal positioning groove 22 are integrally formed, and can be specifically integrally cast, which is convenient for processing and molding and also improves the structural strength.

[0056] In one embodiment, if Figure 1-2 , Figure 5 and Figure 9-12 As shown, the tooth body 2 includes two tooth body monomers 21 which are separately arranged and adjacent to each other.

[0057] Each tooth body monomer 21 is connected to the wheel axle 1 via two bolts 3 .

[0058] The bottom surface of each tooth body monomer 21 is provided with a longitudinal positioning groove 22 and a transverse positioning rib 23 , and the transverse positioning rib 23 is located between the two bolts 3 .

[0059] In this embodiment, the tooth body 2 adopts two independent tooth body monomers 21, and the weight of the gear tooth monomer 21 is about half of that of the tooth body 2, which is convenient for transportation and installation. The two tooth body monomers 21 are close together and assembled in a wheel axle groove 11. In the axial direction along the wheel axle 1, the two ends of the tooth body monomer 21 are connected to the wheel axle 1 by two bolts 3 respectively. The bottom surface of the tooth body monomer 21 is provided with a longitudinal positioning groove 22 and a transverse positioning rib 23. The transverse positioning rib 23 is located in the middle of the longitudinal positioning groove 22, and the transverse positioning rib 23 is located between the two bolts 3, which is conducive to the uniform transmission of force.

[0060] In one embodiment, if Figure 5 and Figure 9-13 As shown, the tooth body monomer 21 includes two spaced apart teeth 211 , and each tooth 211 is connected to the wheel axle 1 via a bolt 3 .

[0061] In this embodiment, two teeth 211 are integrally provided on the top of the gear body 21, and a tooth groove is formed between the two teeth 211. Each tooth 211 is connected to the axle 1 through a bolt 3. The tooth 211 is the main force-bearing component of the tooth body 2, and the bolt 3 is connected between the tooth 211 and the axle 1, which can improve the reliability of the connection between the tooth body 2 and the axle 1.

[0062] In one embodiment, if Figure 4-5 and Figure 13-14 As shown, the bolt 3 includes a bolt head 31 and a screw rod 32 connected to the bolt head 31 .

[0063] The tooth body 2 is provided with a head assembly groove 24 and a screw rod through hole 25 .

[0064] The bolt head 31 is assembled in the head assembly groove 24 , and the screw rod 32 passes through the screw rod through hole 25 and is connected to the wheel axle 1 .

[0065] A first sealing ring 4 is provided between the bolt head 31 and the groove wall of the head assembly groove 24 .

[0066] In this embodiment, the bolt 3 includes a bolt head 31 and a screw rod 32 , and the screw rod 32 is integrally connected to the bolt head 31 .

[0067] The tooth body 2 is provided with a plurality of screw rod through holes 25 for passing the screw rod 32. A head assembly groove 24 is provided on the top surface of each screw rod through hole 25 for assembling the bolt head 31.

[0068] The first sealing ring 4 is a rubber sealing ring, which is used to be assembled between the bolt head 31 and the groove wall of the head assembly groove 24 to prevent water, dust, materials, etc. from falling into the screw through hole 25.

[0069] During assembly, first put the first sealing ring 4 on the specified position of the bolt head 31, pass the screw 32 through the screw through hole 25 and connect it to the internal threaded hole 14, the bolt head 31 is assembled in the head assembly groove 24, and the first sealing ring 4 is sealed between the bolt head 31 and the groove wall of the head assembly groove 24.

[0070] As required, a positioning step may be provided on the groove wall of the head assembly groove 24 to position the first sealing ring.

[0071] In one embodiment, if Figure 2 , Figure 4 and Fig.14 As shown, the bolt head 31 is provided with a spanner inserting groove 311 , and a plug cover 5 is detachably installed in the spanner inserting groove 311 .

[0072] In this embodiment, the bolt head 31 has a wrench insertion groove 311 for inserting a wrench to tighten the bolt 3. The wrench insertion groove 311 is preferably a hexagonal groove.

[0073] The plugging cover 5 is a rubber plugging cover or a rubber plugging cover, which is used to be installed in the wrench plug slot 311 to seal the slot of the wrench plug slot 311 to prevent water, dust, materials, etc. from falling into the wrench plug slot 311, which is convenient for subsequent disassembly and replacement of parts and improves efficiency.

[0074] In one embodiment, if Figure 2 , Figure 4 and Fig.14 As shown, a washer 6 is provided between the bolt head 31 and the bottom plate of the head assembly groove 24. The washer 6 can be a common rubber washer or a double-disc washer, which is placed between the bottom surface of the bolt head 31 and the bottom plate of the head assembly groove 24 to play a role of buffering, protection and sealing.

[0075] In one embodiment, if Figure 2 As shown, a second sealing ring 7 is provided between the tooth body 2 and the groove wall of the wheel shaft groove 11. The second sealing ring 7 is a rubber sealing ring, which is used to prevent water, dust, etc. from entering the wheel shaft groove 11 through the gap between the tooth body 2 and the wheel shaft 1, thereby improving the sealing effect.

[0076] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0077] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A sprocket device, characterized in that: It comprises a wheel axle (1), a tooth body (2) and a bolt (3); A plurality of tooth bodies (2) are arranged on the wheel axle (1) at intervals along the circumferential direction, and each tooth body (2) is connected to the wheel axle (1) via a plurality of bolts (3); A wheel axle groove (11) is provided on the wheel axle (1) at a position corresponding to each tooth body (2), a longitudinal positioning convex rib (12) extending along the axial direction of the wheel axle (1) is provided in the wheel axle groove (11), and a transverse positioning groove (13) is provided on the positioning convex rib; The bottom surface of the tooth body (2) is provided with a longitudinal positioning groove (22) extending along the axial direction of the wheel shaft (1), and a transverse positioning convex rib (23) is provided in the longitudinal positioning groove (22); The bottom of the tooth body (2) is engaged in the wheel axle groove (11), the longitudinal positioning rib (12) is engaged in the longitudinal positioning groove (22), and the transverse positioning rib (23) is engaged in the transverse positioning groove (13).

2. The sprocket device according to claim 1, characterized in that: A plurality of internal threaded holes (14) are provided at intervals on each of the longitudinal positioning ribs (12), and one end of the bolt (3) is connected to the internal threaded hole (14).

3. The sprocket device according to claim 1, characterized in that: The longitudinal positioning rib (12) is integrally formed with the groove wall of the wheel axle groove (11).

4. The sprocket device according to claim 1, characterized in that: The transverse positioning rib (23) and the groove wall of the longitudinal positioning groove (22) are integrally formed.

5. The sprocket device according to claim 1, characterized in that: The tooth body (2) comprises two tooth body monomers (21) which are separately arranged and adjacent to each other; Each tooth body monomer (21) is connected to the wheel axle (1) via two bolts (3); The bottom surface of each tooth element monomer (21) is provided with a longitudinal positioning groove (22) and a transverse positioning rib (23), and the transverse positioning rib (23) is located between the two bolts (3).

6. The sprocket device according to claim 5, characterized in that The tooth body monomer (21) comprises two teeth (211) arranged at intervals, and each of the teeth (211) is connected to the wheel axle (1) via a bolt (3).

7. The sprocket device according to any one of claims 1 to 6, characterized in that: The bolt (3) comprises a bolt head (31) and a screw rod (32) connected to the bolt head (31); The tooth body (2) is provided with a head assembly groove (24) and a screw rod through hole (25); The bolt head (31) is assembled in the head assembly groove (24), and the screw rod (32) passes through the screw rod through hole (25) and is connected to the wheel shaft (1); A first sealing ring (4) is provided between the bolt head (31) and the groove wall of the head assembly groove (24).

8. The sprocket device according to claim 7, characterized in that The bolt head (31) is provided with a spanner inserting groove (311), and a blocking cover (5) is detachably installed in the spanner inserting groove (311).

9. The sprocket device according to claim 7, characterized in that: A washer (6) is provided between the bolt head (31) and the bottom plate of the head assembly groove (24).

10. The sprocket device according to any one of claims 1 to 6, characterized in that: A second sealing ring (7) is provided between the tooth body (2) and the groove wall of the wheel shaft groove (11).

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